Cleanup a few probably-incorrect OS_<random> uses.

chrome/browser/extensions/api/autotest_private/autotest_private_api.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/autotest_private/autotest_private_api.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/extensions/api/autotest_private/autotest_private_api_factory.h"
 #include "chrome/browser/extensions/extension_function_registry.h"
 #include "chrome/browser/lifetime/application_lifetime.h"
@@ skipping 20 matching lines @@
   return true;
 }
 
 bool AutotestPrivateShutdownFunction::RunImpl() {
   scoped_ptr<api::autotest_private::Shutdown::Params> params(
       api::autotest_private::Shutdown::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   DVLOG(1) << "AutotestPrivateShutdownFunction " << params->force;
 
-#if defined(OS_CHROME)
+#if defined(OS_CHROMEOS)
   if (params->force) {
     if (!AutotestPrivateAPIFactory::GetForProfile(profile())->test_mode())
       chrome::ExitCleanly();
     return true;
   }
 #endif
   if (!AutotestPrivateAPIFactory::GetForProfile(profile())->test_mode())
     chrome::AttemptExit();
   return true;
 }
@@ skipping 44 matching lines @@
   return true;
 }
 
 AutotestPrivateAPI::AutotestPrivateAPI() : test_mode_(false) {
 }
 
 AutotestPrivateAPI::~AutotestPrivateAPI() {
 }
 
 }  // namespace extensions